Logging-block



F. H. LAMB.

LOGGING BLOCK.

APPLICATION FILED NOV. 26,1919.

Pafented Feb. 1,1921; I

UNITED STATES PATENT OFFICE.

LOGGING-BLOCK.

Specification of Letters Patent.

Patented Feb; 1, 1921:

Application filed November 26, 1919; SerialNo. 340,739.

To all whom it may concern Be it known that I, FRANK H. LAMB, a citizen of the United States, residing at Hoquiam, in the county of Grays Harbor and State of Washington, have invented certain new and useful improvements in Logging-Blocks, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to certain new and useful improvements in logging blocks, the object being to provide a block which 1S exceedingly simple and cheap in construct on and one which can be readily assembled, the pulley spindle being secured within the frame by nuts operated by the rotation of the side members of the frame, so as to se' curely fasten thespindle in position.

Another and further object of the invention is to provide novel means for locking the latch pins in position.

A still further object of the 1nyent1on is to provide a logging block liavlng novel means for lubricating the pulley inconnection with the spindle whereby the pulley willbe thorou hly lubricated.

A further 0 j-ect of the invention is to provide a novel form of self-closing plug, for theoil reservoirs of the block whereby the-reservoirs can be readily filled with lubricant.

Other and further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims.

In'the drawings:

Figure l is a side elevation of a logging block constructed in accordance with my invention partly. in section, showing themanner of locking the latch pin in PQSltlOlI;

1 Fig. 2 is an end elevation partly in section showing the manner of constructing the oil reservoir and spindle.

Fig. 3 is a detail enlar ed section through the self-closing oil plug or the oil reservoir.

In carrying out my invention I employ a frame formed of *sidemembers '1 and 2, which are provided with spaced apertu'red ears 3 and 4:, at their upper ends through which extend latch pins 5 and 6. The latch pinsare provided with annular grooves 7 from which extend longitudinal grooves 7" as clearly shown in Fig. 1. Theears of the side members of the frame are" provided with set screws 8 extending intothe apertures thereof for locking the latch pins in posltion. By forcing the latch pins into the in it will be I securely locked withinthe rame.

The side members 1 and2 are connected together through the medium of alink 9,

which is provided with apertured ends through which the latch pins 5 and 6 extend. Mounted on the latch pins 5 and 6 between the ears of the side members is a yoke 10, which is provided with bifurcated apertured ends 11, which embracethe link 9, the latch pins passing through the'apertured ends of the furcations as clearly shown in Fig. 1)

The sidemembers 1 and 2 are provided with bores 12 and 13 adapted to receive the reduced ends 14 and '15 ofa spindle 16, on which is mounted a pulley j 17, which is so disposed between the side frames-that it can rotate freely thereon, the side framesbeing provided with guide portions 18 for guiding and holding the cableorpulley.

The spindle 16 is provided with a longitudinally disposed bore 19, which is closed at its outer end by a plug 20, and is provided with radial bores 21 formingoilpassages which are adapted to communicate with oil reservoirs 22 formed in the sidemembers 1 and 2, said oil reservoirs extending down around the bores 12 and 13, thereof as hollow plugs 27, each havingya conical valveseat 28, on which is adapted to be seated the conical portion of valve 29, which isheld closed by a coil spring as clearly shown in Fig 3, whereby an oil can or any other device can be forced into engagement'with the valve so as to unseat the same in order to allow lubricant to be placed withifln the oil reservoirs 22L v 1 The reduced ends of the spindle 15 are threaded as shown at 81 on which is adapted to be placed nuts 32, adapted to fit within recesses 33 formed in the side members 1 5 and 2, and as herein shown the recesses and .-in accordance with my invention, the two side members 1 and 2 are placed over the reduced ends of the spindle, it 01": course be ing understood that the pulley has previously been placed upon the spindle. A

I wrench is then preferably applied to the nuts so as to screw the same until they start to enter the recesses and by moving the side members so that the nutswill enter the recesses or sockets and then rotating. the members 1 and 2 the nuts will be screwed up on the threaded ends of the spindle so as to securely lock the spindle without the use of any other kind of fastening means.

he yoke and links are then placed in position and the latch pins forced through the same, it of course being understood that in inserting the latch pin the same is turned until the longitudinal groove registers with the projection formed by the set screw 8 so that the pin will pass into the ear and by turning the latch pin so as to move the projection out of alinement with the long tudinal groove the pin is securely locked. The reservoirs can then be filled with oil and in use the logging block will be thoroughly lubricated.

From the foregoing description it will be seen that I have provided a logging block composed of a pair of independent side members having. bores to receive a spindle, said members being provided with sockets 33 adapted to receive nuts carried by the ends of the spindle whereby upon rotation of the side members the spindle will be securely locked between the side members of the frame of the logging block.

; *L-By constructing a logging block of a pair of duplicate side members each having a nut receiving socket for rotating the nut on I thexspindle, the spindle can be securely locked within the side members. It will also be seen that by constructing the latch pins with annular grooves from which extend longitudinal grooves and by forming the ears; of the side members with projections herein shown in theform of a set screw the 1 pins can be readily inserted-and by giving the same a turn will be locked in position. While I have shown the side members connected together at the upper end by latch pins and links it is of course understood the solid cross head could be bolted between the upper ends of the side members having a swivel or clevis connected thereto and I do not wish to limit myself to these details of construction.

What I claim is:

1. 1k logging block composed of a pair oi members connected together at their upper ends by a link and yoke, said members being provided with bores to receive a spindle, said spindle having threaded ends, nuts mounted on said ends, said members being provided with sockets adapted to receive said nuts for rotating said nuts for securing said spindle in said side members. i

2. A logging block comprising a pair of side members having bores to receive the spindle, each of said members being provided with a socket adapted to receive a nut carried by said spindle for rotating said nut for locking said spindle between said side members.

3. A logging block comprising a pair oi. side members provided with bores, a spindle mounted in said bores having threaded ends, a nut mounted on each threaded end, said members being provided with sockets corresponding in shape to the nuts for rotating said nuts, when turned around the spindle as an axis, for locking said spindle between said side members.

at. A logging block comprising a pair of side members having bores at their lower ends, a spindle having reduced threaded ends mounted in said bores, a pulley mounted upon said spindle, nuts mounted on said threaded ends, the side members of said frame being provided with sockets to receive said nuts for rotating said nuts when said side members are turned around the spindle as an axis for locking said spindle between said side members and a yoke for connecting the upper ends of said side members.

5. A logging block composed of a pair of side members, a spindle carrying a pulley mounted in said side members, said spindle being provided with threaded portions, nuts working on said threaded portions, said members being provided with sockets corresponding in shape to said nuts, said members being adapted to be rotated around the spindle as an axis, for revolving said nuts for securing said spindle between said side members, and means for connecting the upper ends of said side members.

6. A logging block comprising a frame formed of a pair of side members, connected together at their upper ends by a yoke, said members being provided with bores, a grooved spindle provided with reduced ends mounted in said bores, a pulley carried by said spindle, said spindle having a bore provided with closed ends and with radial passages, one of said side members being provided with an oil reservoir surrounding said bore and communicating with one set of passages, the other set of passages, of said spindle terminating into the groove formed in the periphery thereof, a strip of felt arranged in said groove for lubricating the pulley mounted 011 said spindle.

7. A logging block comprising a frame composed of side members having bores, a grooved spindle mounted in said bores, a pulley carried by said spindle, a yoke for connecting the upper ends of said side members, said spindle being provided with a bore having closed ends, radial. oil passages and oil ducts extending from said bore, said oil ducts terminating in the groove formed in the periphery of said spindle, a strip of felt arranged within said groove, one of said side members being provided with an oil reservoir surrounding said bore and communicating with the oil passages of said spindle, said oil reservoir having a bore, and a plug arranged within said bore.

8. A logging block comprising a frame composed of side members having bores, a hollow spindle mounted in said bores having closed ends, said spindle having a longitudinal groove, a pulley mounted on said spindle, radial oil passages and oil ducts extending from the cavity of said spindle, said oil ducts terminating in the groove formed in the periphery of said spindle, a strip of felt arranged within said groove, said side members being provided with oil reservoirs surrounding said spindle and communicating with the oil passages thereof and means for locking said spindle within said side members.

In testimony whereof I hereunto afiix my signature 1n the presence of two witnesses.

FRANK HAINES LAMB.

Witnesses:

M. B. BROWN, M. E JOHNsON. 

